Gudgeon-pin for internal-combustion engines.



' p A. BALTENSWE ILER & K. EG'LOFF. GUDGEONPIN FOR INTERNAL COMBUSTIONIE-NGINES.

APPLICATION FILVED APR. 22, 1916.

Patented Apr. 24, 1917,

ADOLF BALTnNswErLEn AND KURT actors, or Anson, SWITZERLAND, AssIGnonsTo FIRM ADOLPH SAURER, or ABBON, SWITZERLAND.

GUDGEON-PIN Fort inTEnNaL-ooMBUsTIon nneinns.

Specification of Letters Patent.

Patented Apr. 24:, 1917.

Application filed April 22, 1916. Serial No. 92,973.

cylindrical shape and, internally formed with coned ends and with a number" of longitudinal slits in the said ends, suchpinbeing secured in position by means of a centrally disposed screwed pin having a conical head or collar at one end and a conical nut at the other by which, when the nut is screwed home, the ends of the gudgeon pin are expanded to grip the bores of the piston adapted to receive them.

While such aconstruction of gudgeon pin is effective for the purpose for which it is intended some difficulty is experienced in securing the pin in position as it is necessary to rotate the nut against the constraint imposed by the engagement of the exterior surface of the nut with the conically formed end of the gudgeon pin.

The invention has for its object to improve the construction of such gudgeon pin.

According to the invention the screwed pin may be provided at, each end with a conical nut so that in securing the gudgeon pin in position both nuts can be-rotated, and less rotation of each isrequired than is the case when a single nut is used, or that one may be rotated which is more readily turned in the conical endof thegudgeon pin.

.Accordingto a modification, in order to obviate the necessity of having to turn the nuts in their hollow conical seats when securing the gudgeon pin in. position there may be provided at one end of the screwed pin a nut device which comprises an inner threaded member and an outer conical ring which requires to be shifted only longitudinally when tightening up. At the other end of the screwed nut there may be provided a plain conical head.

, The invention consists in the construction, arrangement and combination of parts described hereinafter and pointed out in the claims. p

A construction according to the modification is represented,'by way of example, in the accompanying, drawings wherein Figure 1 is a'longitudinal section, and

Fig. 2 is an end elevation of the gudgeon p n.

Referring to the drawings, the hollow gudgeon pin a having slits cin its ends is mounted in the walls Z) ofthe piston. The ends of the gudgeon pin are conical internally. The conical head d of the bolt 6 is located in the one end of the pin a, and a ring fin the other. In this ring is a nut 9 having a flange h on the one end and a collar 11 driven on the other. This collar is riveted or otherwise fixed on the nut g and is used for removing the ring ffrom the gudgeon pin a. In order to prevent the vnut g from rotating an elastic washer is is placed under its flange h.

Instead of the head d being made integral with the bolt e, for the purposes of reducingthe cost of manufacture it may be screwed on.

We claim 1; The combination with a cylindrical gudgeon pin-having internally conical, elastic ends, of a threaded pin having a conical head located in the one end of the gudgeon pin, an internally threaded member screwed on the threaded pin, and an externally conical ring movably carried by the latter memher and located in the other end of the gudgeon pin.

2. The combination with a cylindrical gudgeon pin having internally conical, elastic ends, of a threaded pin having a conical head located in the one end of the gudgeon In testimony whereof, we afiix our signapin, an internally threaded member having tures in the presence of two witnesses. a flange at one end and a collar at the other ADOLF BALTENSWEILER end screwed on the threaded pm, and an ex- KURT EGLOFF 5 ternally conical ring movably carried on the latter member between said flange and said Witnesses: collar and located in the other end of the FRANK DIMUoKE, gudgeon pin. EMIL MEILE.

Copies of this patent may be obtained for five cents each by addressing the Commissioner of Patents,

- Washington, D. 0. 

